Home / 1,278,845.82-1,916,985.69-436,821.66

Finding the Fourth Proportional to 1,278,845.82, 1,916,985.69 and 436,821.66

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Solution

The fourth proportional to 1,278,845.82, 1,916,985.69 and 436,821.66 is: 654,794.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,845.82 : 1,916,985.69 = 436,821.66 : x
  2. Step 2: Convert to fraction form
    1,278,845.82/1,916,985.69 = 436,821.66/x
  3. Step 3: Cross multiply
    1,278,845.82x = 1,916,985.69 × 436,821.66
  4. Step 4: Simplify right side
    1,278,845.82x = 837,380,871,302.05
  5. Step 5: Solve for x
    x = 837,380,871,302.05/1,278,845.82
  6. Step 6: Final answer
    x = 654,794.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.